Party Poker No-Limit Hold'em, $ Hero (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

saw flop|saw showdown

UTG+2 ($8.45)
MP1 ($24.75)
MP2 ($24.65)
MP3 ($21.95)
CO ($29.63)
Button ($26.60)
SB ($24.50)
Hero ($25)
UTG ($0)
UTG+1 ($26.40)

No solid read on this villain yet either.

Preflop: Hero is BB with A, K. SB posts a blind of $0.10. UTG posts a blind of $0.25.
UTG (poster) checks, 4 folds, MP3 raises to $0.75, CO calls $0.75, 2 folds, Hero raises to $2.75, UTG folds, MP3 calls $2.25, CO folds.

Flop: ($7.10) J, Q, J (2 players)
Hero bets $2.85, MP3 calls $2.85.

Turn: ($12.80) J (2 players)

Your move and why.